PROBLEM TO BE SOLVED: To prevent a pair of connectors for connecting two channels from being improperly connected to a connector with an inappropriate structure.SOLUTION: A first connector 1 includes: a cap 3 a tubular pedestal 6 integrally provided with the cap and projecting to a distal end side a tubular projection 8 projecting from the center at the distal end of the pedestal and an engagement nail 9 projecting outward from part of the peripheral edge at the distal end of the pedestal. A second connector 2 includes: a tube coupling part 4 an inner tube 11 integrally formed with the tube coupling part, projecting to the distal end side and insertable into the tubular projection of the first connector an outer tube 12 combined with the proximal end side of the inner tube to form an annular recess 13 which can be fitted with the tubular projection between the outer tube and the outer peripheral surface of the inner tube and an engagement wall 5 coupled to the outer tube, extending toward the distal end side in the tube axial direction and projecting further than the distal end of the outer tube. The first connector and the second connector are connected to each other by fitting the tubular projection into the annular recess and engaging the engagement nail with the engagement wall.COPYRIGHT: (C)2013,JPO&INPIT【課題】2つの流路を接続するための対のコネクタを、不適合な構造を有するコネクタとの誤接続を回避可能とする。【解決手段】第1コネクタ1は、キャップ部3と、キャップ部と一体に設けられ先端側に突出する筒状の台座6と、台座の先端の中央部から突出する管状凸部8と、台座の先端部周縁の一部から外方に突出する係合爪9とを備える。第2コネクタ2は、チューブ連結部4と、チューブ連結部と一体に形成されて先端側に突出し、第1コネクタの管状凸部の内部に挿入可能な内筒部11と、内筒部の基端側と結合し、内筒部の外周面との間に管状凸部が嵌合可能な環状凹部13を形成する外筒部12と、外筒部に連結され、管軸方向の先端側に向かって延在して外筒部の先端よりも突出する係合壁5とを備える。管状凸部を環状凹部に嵌合させ、係合爪と係合壁とを係合させることにより、第1コネクタと第2コネクタが接続される。【選択図】図4
